hyperarithmetical hierarchy造句

例句与造句

1. The hyperarithmetical hierarchy is defined from these iterated Turing jumps.
2. It is closely related to the hyperarithmetical hierarchy.
3. The relativized hyperarithmetical hierarchy is used to define "'hyperarithmetical reducibility " '.
4. Each level of the hyperarithmetical hierarchy corresponds to a countable ordinal number ( ordinal ), but not all countable ordinals correspond to a level of the hierarchy.
5. In computability theory, Putnam investigated the structure of the ramified analytical hierarchy, its connection with the hyperarithmetical hierarchy of arithmetical degrees can be naturally extended up to \ beta _ 0.
6. It's difficult to find hyperarithmetical hierarchy in a sentence. 用hyperarithmetical hierarchy造句挺难的
7. One example of a hyperarithmetical, nonarithmetical set is the set " T " of G鰀el numbers of formulas of Turing equivalent to the set 0 ^ { ( \ omega ) }, and so is not high in the hyperarithmetical hierarchy, although it is not arithmetically definable by Tarski's indefinability theorem.